Estimating VS30 at Korean Peninsular seismic observatory stations using HVSR of event records

被引：15

作者：

Ahn, Jae-Kwang ^{[1
]}

Kwak, Dong Youp ^{[2
]}

Kim, Han-Saem ^{[3
]}

机构：

[1] Korea Meteorol Adm, Earthquake & Volcano Res Div, 61 Yeouidaebang Ro 16 Gil, Seoul 07062, South Korea

[2] Hanyang Univ, Dept Civil & Environm Engn, ERICA, 55 Hanyangdaehak Ro, Ansan 15588, Gyeonggi Do, South Korea

[3] Korea Inst Geosci & Mineral Resources, Earthquake Res Ctr, 124 Gwahak Ro, Daejeon 34132, South Korea

来源：

SOIL DYNAMICS AND EARTHQUAKE ENGINEERING | 2021年 / 146卷

关键词：

HVSR; Seismic station; Empirical function; AVERAGE HORIZONTAL COMPONENT; SITE CLASSIFICATION-SYSTEM; H/V SPECTRAL RATIOS; PEAK GROUND MOTION; NGA MODEL; S-WAVES; AMPLIFICATION; CALIFORNIA; FREQUENCY; VALLEY;

D O I：

10.1016/j.soildyn.2021.106650

中图分类号：

P5 [地质学];

学科分类号：

0709 ; 081803 ;

摘要：

The VS30 of 89 stations in Republic of Korea are predicted using semi-empirical relationship between natural frequency (fp) selected from horizontal-to-vertical spectral ratio (HVSR) and time averaged shear wave velocity down to 30 m depth (VS30). The installation of seismic stations has been accelerated in Republic of Korea after two damaging earthquakes at 2016-2017, but the majority of stations do not have geophysical investigation yet, and even for a few stations the investigation is prohibited due to deforestation issue and civil complaints. The objective of this study is to predict VS30 for stations without investigation using fp to VS30 relationship. The HVSR of 48 stations with measured VS30 are analyzed to find appropriate fp selection and the best-fitted model. We found that the fp-VS30 relationship is weak if the peak is not distinct and HVSR amplitude is low, and the model developed for the stable continent region fits the best.

引用

页数：20

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